splitter trouble

[rbushmaster]

hey guys,
i was splitting wood today when all the sudden i couldnt generate more that 300 psi on my gauge, log lift is working fine,it seems as if the relief is bypassing,
could it have blown a cylinder seal ? and is there a way to check /test?

thanks

 

[AKKAMAAN]

hey guys,
i was splitting wood today when all the sudden i couldnt generate more that 300 psi on my gauge, log lift is working fine,it seems as if the relief is bypassing,
could it have blown a cylinder seal ? and is there a way to check /test?

thanks

http://www.arboristsite.com/showpost.php?p=2509578&postcount=2

 

[rbushmaster]

Member valve rd 5000
took prv out apears to be a sealed cartridge, i cant figure out how it comes apart, so i hose it out with brakeleen
put it back together and its the same, cylinder stops at 400 psi, if i increase engine rpm to full throttle i can get 1000 psi

when the cylinder hits its 400 psi resistance and wont travel any further i hear a shhhhhhhhh noise

 

[J_J]

Do you have a two spool valve, or two different valves? Please show some good pictures. Did you change any hoses?

What pressure were you getting before this happened?

I believe that relief cartridge is adjustable.

 

[rbushmaster]

hi jj,
2 spool valve
power beyond
no changes were made was getting 2250 psi before relief took over then it went to not splitting and only getting 400 psi

 

[kennyd]

Is the fluid foamy?

Any easy way to check the cylinder seal is to extend the cylinder all the way, then remove the hose from the rod-end, now operate the lever to try to extend it further, if fluid squirts out of the open port, then the seals are bypassing.

 

[rbushmaster]

fluid was fine,
ill try that with the cylinder
extend all the way out
remove the line on front of cylinder that would make the cylinder return to see if fluid is bypassing seals correct?

extra info
new 22 gpm barnes 2 stage
new prince rd 5000 2 spool valve
used 4.5"x2"x36" cylinder
18 hp briggs
have split 4 cords with engine just above idle
would stall the cylinder at 2250 psi with gnarly knotted peices relief would open and not even effect engine rpm

 

[J_J]

Which one of these part numbers do you have for the RD5000

That pump only needs a 12 HP engine

20-2012* 522ACAA5A4B1 1 single, 1 double-acting spool, spring-ctr'd*
20-2022 522CCAA5A4B1 2 spool, both double-acting, spring-centered
20-2022-75 523CCAA5A4B1 2 spool, both DA, spring-ctr, all ports 3/4"
20-2042 522GCGA5A4B1 1 DA w/ float, 1 DA spring ctr'd
20-2021-SAE 525MMEE5A4B1 Autocycle valve (w/ conv port)
20-2022-J 522CCAA5A4B6 Joystick, 2 spool DA, spring ctr'd
20-2042-J 522GCGA5A4B6 Joystick, 1 DA w/ float, 1 DA spr ctr'd

 

[rbushmaster]

the 18 hp was free..... runs great but sure does burn up the fuel

the valve is
522ccea5a4b1

surplus center #9-7414

prince 25gpm 2 spool log splitter/lifter valve
3/4 ports
1/2" work ports
with power beyond sleeve installed

 

[kennyd]

fluid was fine,
ill try that with the cylinder
extend all the way out
remove the line on front of cylinder that would make the cylinder return to see if fluid is bypassing seals correct?

Yes.

used 4.5"x2"x36" cylinder

Everything else is new...focus your attention on that used cylinder...